DHT – 7-in-1 Hybrid System: The Perfect Balance of Energy Saving and Performance
DHT – 7-in-1 Hybrid System: The Perfect Balance of Energy Saving and Performance
Hybrid Done Right
Hybrid technology doesn't have to be a compromise. You shouldn’t have to choose between fuel economy and driving enjoyment.
The DHT (Dedicated Hybrid Transmission) from GWM proves that you can have both. It's a 7-in-1 hybrid system that delivers energy-saving efficiency and perfect performance in one integrated package. Think of it as the best of both worlds – electric-like smoothness at low speeds, combined with the long-range capability of a conventional engine at high speeds.
This isn't a traditional transmission with a motor bolted on. It's a ground-up hybrid-dedicated system – and it's recognised as one of the World's Top 10 Hybrid Systems.
Why the DHT Stands Out
7-in-1 High Integration
The DHT system integrates seven core components into a single, compact unit: a 1.5L/1.5T dedicated hybrid engine, a fixed-shaft transmission, a generator motor (GM), a drive motor (TM), a dual-motor controller, and an integrated DC-DC converter. This high level of integration delivers smaller size, lighter weight, higher transmission efficiency, and better NVH performance compared to traditional fuel systems.
Two-Speed DHT – A Game Changer
Most hybrid systems use a single-speed reduction gear. The DHT uses a two-speed parallel-axis structure – one gear for power (low-speed acceleration and climbing), and another for economy (high-speed cruising). This two-speed design expands the engine's efficient operating range across more driving conditions-, allowing the system to choose the most efficient mode for every situation.
Full Speed Range, All Scenarios
The DHT system operates across full speed range and all working conditions. Whether you're crawling through city traffic, cruising on the highway, or climbing a steep grade, the system intelligently selects the optimal driving mode.
Both HEV and PHEV Ready
The DHT platform supports two power architectures – HEV (self-charging hybrid) and PHEV (plug-in hybrid). This flexibility means the same core technology can serve different market needs, from fuel-efficient city cars to long-range plug-in hybrids.
How It Works – Five Operating Modes
The DHT system features five core operating modes, intelligently switching between them based on driving conditions:
| Mode | When It‘s Used | What It Does |
|---|---|---|
| EV Mode | Low-speed city driving | TM motor drives the wheels directly; engine stays off – zero fuel consumption |
| Series Mode | Urban stop-and-go traffic | Engine runs the GM generator to charge the battery; TM motor drives the wheels |
| Parallel Mode | High-speed or aggressive driving | Engine and TM motor work together for maximum power- |
| Direct Drive Mode | Highway cruising | Engine drives the wheels directly through the two-speed gearbox for maximum efficiency |
| Regeneration Mode | Braking or deceleration | TM motor acts as a generator to recover energy and recharge the battery |
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | 7-in-1 Hybrid System (DHT) |
| Gears | Two-speed (1/N/2) |
| Engine Torque | 250 N·m |
| Engine Speed Ratio | 4.595 / 2.9 |
| Generator – Continuous Power | 47 kW @ 6,000–9,800 rpm |
| Drive Motor – Peak Power | 120 kW |
| Drive Motor – Peak Speed | 14,500 rpm |
| Drive Motor – Peak Torque | 300 N·m |
| Drive Motor Speed Ratio | 10.593 |
| System Power (HEV) | Up to 140–180 kW |
| System Power (PHEV) | Up to 170–240 kW |
| System Power (PHEV + P4) | Up to 320 kW (435 hp) |
| Fuel Consumption (HEV) | As low as 4.5–4.6 L/100km |
| System Efficiency | 43–50%- |
The"1-2-3"Architecture
GWM‘s DHT system follows a simple but powerful"1-2-3"architecture:
- 1 set of highly integrated series-parallel hybrid systems
- 2 power architectures – HEV and PHEV-
- 3 powertrain configurations – 1.5L + DHT115, 1.5T + DHT130, and 1.5T + DHT130 + P4
This modular approach means the DHT system can be scaled across different vehicle segments – from compact cars to full-size SUVs.
Real-World Performance
The DHT system delivers measurable results in the real world:
- Fuel economy: HEV models achieve combined fuel consumption as low as 4.5–4.6 L/100km – exceptional for an SUV.
- Driving range: PHEV models can achieve a WLTC range of over 1,100 km.
- Pure electric range: PHEV models offer up to 200 km of EV-only driving.
- Acceleration: The 1.5T + DHT130 + P4 configuration delivers 0–100 km/h in as little as 4.8 seconds-.
- Refinement: In-vehicle noise at 30 km/h is as low as 45.4 dB.
Where It's Used
The DHT system is mainly used in HEV and PHEV economy vehicles, where it achieves a perfect balance of power and economy. It has been adopted across GWM’s vehicle lineup, including:
- Haval H6 (3rd Generation) – China‘s best-selling SUV
- Haval Jolion – compact SUV
- Haval Shenshou (Big Dog) – off-road SUV
- WEY Mocha – premium SUV
- GWM Ora – electric vehicle brand
The system is also supplied to well-known new energy vehicle OEMs, demonstrating its competitiveness beyond GWM's own brands.
Why Choose the DHT System?
- World-class efficiency – 43–50% system efficiency, fuel consumption from 4.5 L/100km
- Proven performance – World Top 10 Hybrid System award
- Flexible architectures – supports both HEV and PHEV configurations
- Scalable – three powertrain options for different vehicle segments
- Full-speed capability – EV, series, parallel, direct drive, and regeneration modes
- Refined driving experience – smooth, quiet, and responsive
- Proven in production – already adopted by multiple OEMs
Contact us to discuss how the DHT 7-in-1 Hybrid System can bring world-class efficiency and performance to your next vehicle programme.
